"Ain't Misbehavin'" is a 1929 song written by Fats Waller, Harry Brooks (music) and Andy Razaf (lyrics).[1] Waller recorded the original version that year for Victor Records and also later performed the song in the 1943 film Stormy Weather. In a 1941 interview with Eddie "Rochester" Anderson, Fats claimed the song was written while "lodging" in alimony prison, and that is why he was not "misbehaving".